7264402120521 has 48 divisors (see below), whose sum is σ = 13035189009024. Its totient is φ = 3795961542912.

The previous prime is 7264402120489. The next prime is 7264402120537. The reversal of 7264402120521 is 1250212044627.

7264402120521 is a `hidden beast` number, since 7 + 2 + 6 + 4 + 4 + 0 + 2 + 120 + 521 = 666.

It is not a de Polignac number, because 7264402120521 - 2⁵ = 7264402120489 is a prime.

It is a super-2 number, since 2×7264402120521² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7264402130521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41360236 + ... + 41535501.

It is an arithmetic number, because the mean of its divisors is an integer number (271566437688).

Almost surely, 2^{7264402120521} is an apocalyptic number.

It is an amenable number.

7264402120521 is a deficient number, since it is larger than the sum of its proper divisors (5770786888503).

7264402120521 is a wasteful number, since it uses less digits than its factorization.

7264402120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82895870 (or 82895867 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 7264402120521 in words is "seven trillion, two hundred sixty-four billion, four hundred two million, one hundred twenty thousand, five hundred twenty-one".